THERMAL PHYSICS

Ø Thermal physics is the combined study of thermodynamics, statistical mechanics, and kinetic theory of gases.

Ø This umbrella-subject is typically designed for physics students and functions to provide a general introduction to each of three core heat-related subjects.

Thermal equilibrium :

Ø Two physical systems are in thermal equilibrium if there is no net flow of thermal energy between them when they are connected by a path permeable to heat.

Coefficient of cubical expansion of some materials :

FUNDAMENTAL LAWS OF GASES :

Ø The three fundamental laws which connect the relation between pressure, volume and temperature are as follows:

1) Boyle’s Law

2) Charles's law 

3) Avogadro's law

Boyle’s Law –

Ø When the temperature of a gas is kept constant, the volume of a fixed mass of gas is inversely proportional to its pressure.

Charles's law -

Ø Charles’s law was formulated by a French scientist Jacques Charles.

Ø According to this law, When the pressure of gas is kept constant, the volume of a gas is directly proportional to the temperature of the gas.

Avogadro's law -

Ø Avogadro's law states that at constant pressure and temperature, the volume of a gas is directly proportional to number of atoms or molecules present in it.

MIND MAP